/*
 * Copyright 2017-2021 Dromara.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.dromara.hmily.xa.rpc.springcloud;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.dromara.hmily.core.context.HmilyContext;
import org.dromara.hmily.core.context.HmilyContextHolder;
import org.dromara.hmily.core.mediator.RpcMediator;
import org.springframework.core.Ordered;

/**
 * 拦截Feign Rpc，使其传递{@link HmilyContext}.
 */
public class FeignRequestInterceptor implements RequestInterceptor, Ordered {

    @Override
    public void apply(final RequestTemplate template) {
        RpcMediator.getInstance().transmit(template::header, HmilyContextHolder.get());
    }

    @Override
    public int getOrder() {
        return Ordered.LOWEST_PRECEDENCE;
    }
}
